Ergonomics - Atlas Copco

170
High torque nutrunner
LTP 51
The relevant variables for this high torque
nutrunner can be selected from Table 3.1
(page 71).
The torque range of this nutrunner is
HANDLE DESIGN
130-1,000 Nm. It is always operated with
a reaction bar. The tool is used mainly by
male operators in the heavy vehicle seg-
ment of the automotive industry.
Variables Weighting Preferred Acceptable Permitted To be Score
factors avoided
(a) (0) (1) (3) (5)
Circumference low force
trigger activated a1=1 152 mm 3
Circumference
trigger open 165 mm 3
Length low force
a3=1 105 mm 0
End marking a5=1 smooth 0
Adjustability a7=0.5 no 0.5
Support surface a8=0.5 yes 0
Viscoelastic
coatiing a9=0.5 yes 0
Friction and
ventilation a10=0.5 good 0
Table 4.19 Evaluation of handle design for the High Torque Nutrunner LTP 51.
Total score: 6.5